专利名称：NOZZLE-TYPE CHECK VALVE WITH PISTON
发明人：David B. Dwyer,Joshua Howard Riegle,Jason
P. Lambin,John Kornijenko,Bruce W. Harry孔侍中帖
申请号：US14637460
申请日：20150304
公开号：US20160258544A1
公开日：
20160908
七年级上册数学期末考试卷及答案专利内容由知识产权出版社提供
专利附图：
诗留美屋
摘要：An exercisable check valve having a fluid delivery test channel and piston
closure is disclod herein. A valve closure member stops flow through the valve in the prence of backwards pressure or when engaged by the piston. The valve may be
tested by applying a pressure source to the fluid delivery test channel to cau the piston to engage the valve closure member and stop flow through the valve. A test rod may then be inrted into a test rod port to ensure the valve closure member is in the proper clod position. The check valve may also include a biasing element to bias the valve closure member to an open position and a drainage channel. The check valve may be ud in any piping or valve system.
奶粉过期还能喝吗申请人：Crane Nuclear, Inc.
对未来工作的期望
罗经仪地址：Kennesaw GA US介绍饺子
国籍：US琼瑶经典语录
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